any richland ready motherboards

Solution
The MSI A78M-E35 supports the A4-6300 from the first BIOS version: http://us.msi.com/support/mb/A78ME35.html#support-cpu
The download file for the 1st BIOS is 7721vU0.zip. The U0 is the first BIOS for that board: http://us.msi.com/support/mb/A78ME35.html#support_download
(click on the 1st BIOS download and you'll see the file name is the same)

Likewise for the Gigabyte GA-F2A88XM; the A4-6300 is supported from the first BIOS version: http://www.gigabyte.com/support-downloads/cpu-support-popup.aspx?pid=4727

clutchc

Titan
Ambassador
The MSI A78M-E35 supports the A4-6300 from the first BIOS version: http://us.msi.com/support/mb/A78ME35.html#support-cpu
The download file for the 1st BIOS is 7721vU0.zip. The U0 is the first BIOS for that board: http://us.msi.com/support/mb/A78ME35.html#support_download
(click on the 1st BIOS download and you'll see the file name is the same)

Likewise for the Gigabyte GA-F2A88XM; the A4-6300 is supported from the first BIOS version: http://www.gigabyte.com/support-downloads/cpu-support-popup.aspx?pid=4727
 
Solution